We are seeking a nearshore Full Stack Lead Engineer to build and support commerce backend services and AI-driven, agentic checkout flows with strong validation and guardrails. You will collaborate across backend and frontend components while ensuring scalable, reliable, compliant delivery—apply now.

Responsibilities

- Design backend services for commerce domain systems such as payment, loyalty, and promotions
- Build REST APIs and microservices using Java and Spring Boot
- Enable AI-driven and agentic checkout flows with validations and guardrails
- Implement scalable and reliable service patterns to meet performance needs
- Ensure compliance and reliability standards across services and integrations
- Develop and maintain selected frontend components using ReactJS
- Integrate AI-assisted workflows into backend systems using Anthropic Claude Code
- Coordinate technical decisions and unblock delivery across nearshore collaboration
- Operate within required US Pacific Time overlap through 4pm PST minimum

Requirements

- 5+ years backend development experience with Java and Spring Boot
- Practical production experience with Anthropic Claude Code
- 5+ years experience building REST APIs and microservices




- Lead-level experience guiding technical decisions and delivery
- Commerce domain experience supporting payment, loyalty, promotion, or related systems
- Cloud platform experience with GCP and/or Azure
- Strong ability to overlap with US Pacific Time and cover until 4pm PST minimum
- Production experience developing front-end components with ReactJS
- Exposure to AI-assisted or agent-based workflows and backend integrations
- Adaptability and willingness to learn new tools, patterns, and technologies
- Upper-Intermediate English proficiency (B2)

Nice to have

- CCA-F certification
- Apigee experience
- JavaScript backend platform experience

We offer

- International projects with top brands
- Work with integral teams of highly skilled, diverse peers
- Healthcare benefits
- Employee financial programs
- Paid time off and sick leave
- Upskilling, reskilling and certification courses
- Unlimited access to the LinkedIn Learning library and 22,000+ courses
- General career opportunities
- Volunteer and community involvement opportunities
- EPAM Employee Groups
- Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn

📌 Lead Java Full Stack Engineer (Argentina)
🏢 EPAM Systems
📍 Argentina